Huh? I dunno I googled it and there are a bunch of hits for ephemerella cornuta. It did only have two tails though. The one with 1 tail landed on me like that, so I am not sure how many it actually did have.

Posted on: 2012/6/2 21:18

_________________
“My mom is being eaten by a dog and there’s nothing I can do!”

It's not cornuta for the reason Pat said, I'm not sure what it is, Cornutas have been move to Drunella genus. Is it an Olive I'd call it that.The second fly is not a March Brown, it might be some type of Isonychia.

Posted on: 2012/6/3 19:01

_________________
George Orwell warned, "The further a society drifts from the truth, the more it will hate those who speak it."

Becker, one of those deals where it used to be Ephemerella, and then the biologists realized they were wrong, and moved it to a more proper place in the Drunella genus. Again, there is no such thing as Ephemerella Cornuta, but it's an understandable mistake, because their used to be.

Where there lots of thes things, or just a couple? There are a ton of species which aren't all that common and not really on the FF radar because of that, but that doesn't mean you can't find one now and then.

For what it's worth, I got plain wing, 2 tails. A hook size 14 is about 10 mm. I can't tell if that first pic has a large, minute, or absent hind wing. So, here is the list of possibilities, all genuses (is genera the plural?) with 2 tails and plain wings and which include bugs approx. 10 mm:

Large hind wing:

metretopus - don't know much about em.cinygmula - only eastern species is too small.epeorus - possibility, some species/individuals have an olive castcinygma - western genus, eliminateameletus- don't know much about it.ephoron (male) - whitefly, I seriously doubt it. siphlonurus - typically much darkerisonychia - this is probably what I'd go with. Isonychia bicolor.ironodes - western genus

Minute hind wing:

baetis - color is right but this would be a HUGE Baetis.

Absent hind wing:

None, though Procloeon goes up to 9 mm.

So, assuming the first bug has not lost a tail, I'm going to call BOTH of them Isonychia Bicolor, mahogany dun. First one is just smallish one, 2nd two largish examples.

They sometimes do not hatch in water, instead swimming to shore and crawl up rocks like a stonefly. Hence, nymphs against the banks can be effective, and of course spinners, but fishing an actual hatch can be tough.